Request #502 From Gabrielle

 I am 25 and I believe I read this book series in middle school. All I can remember is the background of each book was white and there was maybe a picture of a girl on the cover (possibly in pinks and purples). The premise of the books was these children(?) that were transported to another place and they were only accepted if they were “pretty”. so they would get surgeries done to alter their appearance. I want to also say in the first book there was a helicopter that dropped them off?? I honestly don’t remember much more or if that even made any sense but I wanted to give it a shot!